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Q: What is the significance of the NANUs provided by GPS and the similar alerts provided by other GNSS constellations? Are they needed for the use of these systems, and if not, how are they helpful?


SAM PULLEN, Stanford University
A: Since at least 1997, the Global Positioning System (GPS) Control Segment (CS) has issued what are known as “Notice Advisor(ies) to NAVSTAR Users” or “NANU(s).”
As originally reported in Section 3.5 of the 2001 version of the GPS SPS Performance Standard (GPS SPS PS), these provide “notification of changes in constellation operational status that affect the service being provided to GPS users, or if the U.S. Government anticipates a problem in supporting performance standards established in this document.”
The most recent 5th Edition of the GPS SPS PS [2] explains that a key purpose of NANUs is to alert GPS users of foreseeable future GPS satellite outages so that users are not surprised by them and potentially lose continuity. Specifically, Section 2.3.5 of [2] states the following: ....

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China integrates BeiDou tech into youth sports


China integrates BeiDou tech into youth sports
Updated:
Apr 12,2021 01:46 PM
   Xinhua
BEIJING China is integrating technologies of the BeiDou Navigation Satellite System (BDS) into youth sports to inspire the sporting and scientific spirit of the younger generations.
The newly launched BeiDou Cup China Youth Sports Competition targets developing a new model of nationwide youth sports event empowered by BeiDou technologies, according to the organizer.
The competition is an innovative move to enhance people s physical fitness and scientific literacy, while also furthering science popularization as part of the upcoming 12th China Satellite Navigation Conference in 2021 (CSNC2021), said Yang Jian, vice-director of the China Satellite Navigation Office. ....

Yang Jian , China School Sports Federation , China Satellite Navigation Office , Beidou Navigation Satellite System , Beidou Cup China Youth Sports Competition , China Satellite Navigation Conference , China Satellite Navigation , East China , China School Sports , யாங் ஜியான் , சீனா பள்ளி விளையாட்டு கூட்டமைப்பு , சீனா செயற்கைக்கோள் வழிசெலுத்தல் அலுவலகம் , சீனா செயற்கைக்கோள் வழிசெலுத்தல் மாநாடு , சீனா செயற்கைக்கோள் வழிசெலுத்தல் , கிழக்கு சீனா ,

China integrates BeiDou tech into youth sports - China News


2021-04-12 05:35:34 GMT2021-04-12 13:35:34(Beijing Time) Xinhua English
BEIJING, April 12 (Xinhua) China is integrating technologies of the BeiDou Navigation Satellite System (BDS) into youth sports to inspire the sporting and scientific spirit of the younger generations.
The newly launched BeiDou Cup China Youth Sports Competition targets developing a new model of nationwide youth sports event empowered by BeiDou technologies, according to the organizer.
The competition is an innovative move to enhance people s physical fitness and scientific literacy, while also furthering science popularization as part of the upcoming 12th China Satellite Navigation Conference in 2021 (CSNC2021), said Yang Jian, vice director of the China Satellite Navigation Office. ....

Yang Jian , China School Sports Federation , China Satellite Navigation Office , Beidou Navigation Satellite System , Beidou Cup China Youth Sports Competition , China Satellite Navigation Conference , China Satellite Navigation , China School Sports , யாங் ஜியான் , சீனா பள்ளி விளையாட்டு கூட்டமைப்பு , சீனா செயற்கைக்கோள் வழிசெலுத்தல் அலுவலகம் , சீனா செயற்கைக்கோள் வழிசெலுத்தல் மாநாடு , சீனா செயற்கைக்கோள் வழிசெலுத்தல் ,